A tunnel boring machine support device and an open TBM

Abstract

The present invention belongs to the field of tunnel boring equipment, and in particular relates to a tunnel boring machine supporting device and an open type TBM. The open type TBM comprises a cutter head, a main drive, a main beam, a supporting device and a rear support. The supporting device comprises a shoe device, and the shoe device comprises a shoe seat. The shoe seat is connected with a shoe through a shoe cylinder. A moving frame is arranged at intervals in the shoe seat. The moving frame is guided and rotationally mounted on the main beam. A stopping and limiting structure comprising a shoe seat stopping and limiting part and a moving frame stopping and limiting part is provided between the shoe seat and the moving frame. The shoe seat stopping and limiting part and the moving frame stopping and limiting part also have an adjustment interval. A steering drive device is arranged between the shoe seat and the moving frame. The open type TBM also comprises a propulsion device connected between the supporting device and the main beam or a structure fixed relative to the main beam. Such an open type TBM can adapt to soft surrounding rock and can turn while excavating.

Description

Technical Field

[0001] The invention belongs to the field of tunnel boring equipment, and in particular relates to a tunnel boring machine support device and an open type TBM. Background Art

[0002] TBM plays an important role in tunnel excavation in hard rock geology. It is mainly divided into shield type and open type (also called open type). Among them, the open type TBM is tightened on the inner wall of the tunnel by support shoes to provide reaction force for the cutterhead, main drive and main beam, so that the main drive can drive the cutterhead to rotate relative to the tunnel face, and the thrust cylinder can push the cutterhead to excavate, thereby achieving crushing and excavation of the rock wall.

[0003] Specifically, open-type TBMs are divided into main-beam TBMs and Kai-type TBMs according to different support forms. Regarding the structure of the main-beam TBM, for example, a Chinese invention patent application with application publication number CN103437775A and application publication date December 11, 2013 discloses an open-type full-face rock tunnel boring machine, which includes a cutterhead, a shield, a drive assembly, a main beam, a rear support, a propulsion cylinder, a shoe frame system, and two support shoes installed on the shoe frame system. An opening is provided in the middle of the main beam, and the support shoes and the shoe frame system are provided. The system passes through the opening position of the main beam and is connected to the guide rail installed on the main beam. The support shoe and shoe frame system have a certain stroke of movement displacement along the guide rail. A thrust cylinder is arranged between the shoe frame system and the main beam. During excavation, the support shoe is tightened on the tunnel wall, and the thrust cylinder pushes the main beam forward with the main drive and cutter head based on the shoe frame system to realize excavation. When the tunnel boring machine needs to turn horizontally, the thrust cylinders on both sides of the main beam cooperate with the shoe frame system to drive the main beam to move in the horizontal direction, drive the cutter head to turn horizontally, and realize turning while excavating.

[0004] Regarding the Kai-type TBM, its structure is as recorded in the Chinese invention patent specification with authorization publication number CN103899322B and authorization publication number April 27, 2016, including a main beam, an outer Kai structure member (also called a support shoe seat) is mounted on the main beam along the front-to-back direction to guide and circumferentially stop rotation, four support shoes are arranged circumferentially on the outer Kai structure member, and a driving system is arranged between the outer Kai assembly and the main beam, which is used to drive the main beam, main drive and cutterhead to advance when the support shoes tighten the tunnel wall. In addition, a rear support is also arranged on the rear side of the main beam. Due to the large number of support shoes, multiple support shoes can tighten multiple positions of the tunnel wall during excavation. This type of TBM is suitable for situations with poor geological conditions and unstable tunnel walls. However, due to the large number of support shoes, once the support shoes are tightened, their relative positions are locked with each other. During the excavation process, the steering of the tunnel boring machine can only be carried out when changing steps.

[0005] For the above two types of open TBMs, the main beam TBM can turn during the excavation process and is more flexible, but it has fewer support shoes. If it encounters soft surrounding rock or collapsed cavity, it needs manual processing before passing through. Its adaptability to soft surrounding rock is relatively poor. The Kai type TBM has more support shoes. If it encounters soft surrounding rock or collapsed cavity, it can be supported by other support shoes. It has relatively good adaptability to soft surrounding rock, but it cannot adjust the direction during excavation and has relatively poor flexibility. Summary of the invention

[0006] The object of the present invention is to provide a tunnel boring machine support device to solve the technical problem that the support device of an open TBM in the prior art cannot simultaneously meet the requirements of adapting to soft surrounding rock and realizing the steering of the tunnel boring machine during tunneling; the object of the present invention is also to provide an open TBM using the above-mentioned tunnel boring machine support device.

[0007] To achieve the above-mentioned purpose, the technical solution of the tunnel boring machine support device provided by the present invention is:

[0008] A tunnel boring machine support device includes a shoe support device, the shoe support device includes a shoe support seat, shoe support cylinders are arranged at intervals along the circumference of the shoe support seat, one end of the shoe support cylinder is connected to the shoe support seat, and the other end is connected to the shoe support, a moving frame is arranged in the shoe support seat, the moving frame is used to be sleeved on the main beam of the tunnel boring machine, and has a structure that cooperates with the main beam of the tunnel boring machine for guiding and stopping rotation, so that the moving frame can be guided and moved along the front and rear directions with the main beam of the tunnel boring machine and cooperate with the circumferential rotation stop, and there is a limiting mechanism between the shoe support seat and the moving frame in the front and rear directions The stopping and limiting structure comprises a stop and limiting part of the shoe seat located on the shoe seat and a stop and limiting part of the moving frame located on the moving frame, the shoe seat and the moving frame have an adjustment gap in the up-down and / or left-right directions, the stop and limiting part of the shoe seat and the moving frame have an adjustment gap in the front-back direction, and a steering drive device is arranged between the shoe seat and the moving frame for driving the moving frame to adjust its position relative to the shoe seat when the shoe tightens the tunnel wall so as to drive the tunnel boring machine to turn.

[0009] The beneficial effect is that during the excavation process, the shoe support device supports the inner wall of the tunnel through the shoe support, and the mobile frame is connected to the main beam through the corresponding steering drive device while being matched with the shoe support seat. In this way, during the excavation process, the shoe support device provides a reaction force to the main beam through the mobile frame, so that the tunnel boring machine can drive the cutter head to rotate relative to the face and excavate forward. Based on the shoe support device having a shoe support seat, a suitable number of shoe supporters can be arranged along the circumference of the shoe support seat, so that the shoe support device can adapt to soft surrounding rock. At the same time, there is a gap between the mobile frame and the shoe support seat of the shoe support device. When turning is required during the excavation process, the steering drive device drives the mobile frame to move in the up and down or left and right directions relative to the shoe support seat to drive the main beam to move, thereby realizing turning, so that the tunnel boring machine can adjust the excavation direction during the excavation process. The turning radius of such a tunnel boring machine is smaller. In addition, after the tunnel boring machine completes an excavation stroke, the rear support is used to support the main beam, and the support shoe device retracts the support shoe to allow the support device to step forward along the main beam. When the support device steps forward, the support shoe seat drives the movable frame to move forward along the main beam through the stop and limit structure, thereby preventing the steering drive device from being subjected to a large shear force along the front and rear directions, thereby protecting the steering drive device. Similarly, when the main beam is driven forward during excavation, the support shoe seat limits the position of the movable frame through the stop and limit structure, thereby preventing the steering drive device from being subjected to a large shear force along the front and rear directions, thereby protecting the steering drive device. The stop and limit part of the support shoe seat and the stop and limit part of the movable frame have an adjustment interval in the front and rear directions, thereby ensuring that the steering action can be implemented.

[0010] As a further improvement, a stabilizing device capable of elastic deformation or elastic expansion and contraction to be tightened between the stop and limit portion of the shoe support seat and the stop and limit portion of the movable frame is provided between the two.

[0011] The beneficial effect is: by setting up a stabilizing device, the distance between the stop and limit part of the support shoe seat and the stop and limit part of the movable frame can be maintained, thereby avoiding collision at the interval position when the supporting device steps and affecting the smooth progress of the subsequent steering action. At the same time, through the top support of the stabilizing device, the movement of the support shoe seat and the movable frame in the front and rear directions can be effectively reduced when the supporting device steps and the tunnel boring machine is excavating, thereby minimizing the shear force on the steering drive device in the front and rear directions.

[0012] As a further improvement, the stabilizing device is a telescopic stabilizing device, including a sleeve body and a push rod inserted and fitted in the sleeve body, and an elastic power structure is provided between the sleeve body and the push rod to drive the push rod to extend outward.

[0013] The beneficial effect is that compared with the elastically deformable stabilizer, the telescopic stabilizer has a more reliable structural strength and more reliable working performance and durability.

[0014] As a further improvement, the elastic power structure includes a spring, and the spring can drive the push rod to extend outward.

[0015] The beneficial effects are: the spring is easy to arrange and has reliable working performance, and the elastic power structure includes the spring so that the stabilizing device can provide reliable spacing retaining force to the stop and limit part of the support shoe seat and the stop and limit part of the movable frame.

[0016] As a further improvement, the push rod and the sleeve body are sealed and matched to form a gas spring structure.

[0017] The beneficial effect is that the push rod and the sleeve body are sealed and cooperated to form a gas spring structure, so that the structure of the stabilizing device is simpler.

[0018] As a further improvement, the stop and limit portion of the movable frame is an ear plate extending toward the gripper shoe seat, and the ear plate has a stop surface for stop cooperation with the end surface of the gripper shoe seat.

[0019] The beneficial effect is that the ear plate structure makes the structure of the stop and limit part of the movable frame simpler.

[0020] As a further improvement, a plurality of lug plates are arranged along the circumference of the moving frame.

[0021] The beneficial effect is that the multiple ear plates can realize stable and reliable limiting cooperation between the shoe support seat and the movable frame.

[0022] As a further improvement, the steering drive device is a steering drive cylinder, one end of the steering drive cylinder is hinged to the moving frame, and the other end is hinged to the support shoe seat.

[0023] The beneficial effects are: the steering drive cylinder has a simpler structure and can output driving force stably and reliably, and the steering drive device adopts the steering drive cylinder so that the supporting device has a simpler structure and reliable working performance.

[0024] As a further improvement, the steering drive cylinder is a drive oil cylinder.

[0025] The beneficial effect is that the use of the oil cylinder can provide a larger and more reliable driving force.

[0026] As a further improvement, the shoe support seat and the mobile frame have an adjustment gap in the up-down direction, the steering drive device includes an up-down steering drive mechanism arranged on the left side and / or right side of the mobile frame, and the fixed part and the movable part of the up-down steering drive mechanism are arranged up-down and respectively connected to the shoe support seat and the mobile frame; and / or the shoe support seat and the mobile frame have an adjustment gap in the left-right direction, the steering drive device includes a left-right steering drive mechanism arranged on the upper side and / or lower side of the mobile frame, and the fixed part and the movable part of the left-right steering drive mechanism are arranged left-right and respectively connected to the shoe support seat and the mobile frame.

[0027] The beneficial effect is: the steering drive device for driving the mobile frame to move up and down is arranged on the left side and / or right side of the mobile frame, and the arrangement of the steering drive device will not occupy the space between the mobile frame and the shoe seat in the up and down direction, so that the size of the space between the mobile frame and the shoe seat only needs to meet the steering requirements, thereby making the shoe seat have the smallest possible structure and have a higher structural strength. Similarly, the steering drive device for driving the mobile frame to move left and right is arranged on the upper side and / or lower side of the mobile frame, so that the size of the space between the mobile frame and the shoe seat only needs to meet the steering requirements, thereby making the shoe seat have the smallest possible structure and have a higher structural strength.

[0028] To achieve the above purpose, the technical solution of the open TBM provided by the present invention is:

[0029] An open TBM comprises a cutter disc and a main drive for driving the cutter disc to rotate, the open TBM also comprises a main beam and a support device and a rear support arranged on the main beam, the open TBM also comprises a propulsion device, a fixed part and a movable part of the propulsion device are connected to the support device, and the other is connected to the main beam or a structure fixed relative to the main beam, so as to drive the cutter disc, the main drive and the main beam to move forward based on the support device, the rear support is used to support the main beam when the support device steps, the support device comprises a shoe device, the shoe device comprises a shoe seat, shoe cylinders are arranged at intervals along the circumference of the shoe seat, one end of the shoe cylinder is connected to the shoe seat, and the other end is connected to the shoe, and a movable frame is arranged in the shoe seat, The movable frame is used to be mounted on the main beam and has a structure that cooperates with the main beam for guiding and stopping rotation, so that the movable frame can be guided and moved along the front and rear directions and cooperated with the main beam for circumferential rotation. A stopping and limiting structure for limiting the front and rear directions is provided between the shoe seat and the movable frame, and the stopping and limiting structure includes a shoe seat stopping and limiting part located on the shoe seat and a movable frame stopping and limiting part located on the movable frame. The shoe seat and the movable frame have an adjustment gap in the up and down and / or left and right directions, and the shoe seat stopping and limiting part and the movable frame stopping and limiting part have an adjustment gap in the front and rear directions. A steering drive device is provided between the shoe seat and the movable frame for driving the movable frame to adjust its position relative to the shoe seat when the shoe tightens the tunnel wall to drive the tunnel boring machine to turn.

[0030] The beneficial effect is that during the excavation process, the shoe support device supports the inner wall of the tunnel through the shoe support, and the mobile frame is connected to the main beam through the corresponding steering drive device while being matched with the shoe support seat. In this way, during the excavation process, the shoe support device provides a reaction force to the main beam through the mobile frame, so that the tunnel boring machine can drive the cutter head to rotate relative to the face and excavate forward. Based on the shoe support device having a shoe support seat, a suitable number of shoe supporters can be arranged along the circumference of the shoe support seat, so that the shoe support device can adapt to soft surrounding rock. At the same time, there is a gap between the mobile frame and the shoe support seat of the shoe support device. When turning is required during the excavation process, the steering drive device drives the mobile frame to move in the up and down or left and right directions relative to the shoe support seat to drive the main beam to move, thereby realizing turning, so that the tunnel boring machine can adjust the excavation direction during the excavation process. The turning radius of such a tunnel boring machine is smaller. In addition, after the tunnel boring machine completes an excavation stroke, the rear support is used to support the main beam, and the support shoe device retracts the support shoe to allow the support device to step forward along the main beam. When the support device steps forward, the support shoe seat drives the movable frame to move forward along the main beam through the stop and limit structure, thereby preventing the steering drive device from being subjected to a large shear force along the front and rear directions, thereby protecting the steering drive device. Similarly, when the main beam is driven forward during excavation, the support shoe seat limits the position of the movable frame through the stop and limit structure, thereby preventing the steering drive device from being subjected to a large shear force along the front and rear directions, thereby protecting the steering drive device. The stop and limit part of the support shoe seat and the stop and limit part of the movable frame have an adjustment interval in the front and rear directions, thereby ensuring that the steering action can be implemented.

[0031] As a further improvement, a stabilizing device capable of elastic deformation or elastic expansion and contraction to be tightened between the stop and limit portion of the shoe support seat and the stop and limit portion of the movable frame is provided between the two.

[0032] The beneficial effect is: by setting up a stabilizing device, the distance between the stop and limit part of the support shoe seat and the stop and limit part of the movable frame can be maintained, thereby avoiding collision at the interval position when the supporting device steps and affecting the smooth progress of the subsequent steering action. At the same time, through the top support of the stabilizing device, the movement of the support shoe seat and the movable frame in the front and rear directions can be effectively reduced when the supporting device steps and the tunnel boring machine is excavating, thereby minimizing the shear force on the steering drive device in the front and rear directions.

[0033] As a further improvement, the stabilizing device is a telescopic stabilizing device, including a sleeve body and a push rod inserted and fitted in the sleeve body, and an elastic power structure is provided between the sleeve body and the push rod to drive the push rod to extend outward.

[0034] The beneficial effect is that compared with the elastically deformable stabilizer, the telescopic stabilizer has a more reliable structural strength and more reliable working performance and durability.

[0035] As a further improvement, the elastic power structure includes a spring, and the spring can drive the push rod to extend outward.

[0036] The beneficial effects are: the spring is easy to arrange and has reliable working performance, and the elastic power structure includes the spring so that the stabilizing device can provide reliable spacing retaining force to the stop and limit part of the support shoe seat and the stop and limit part of the movable frame.

[0037] As a further improvement, the push rod and the sleeve body are sealed and matched to form a gas spring structure.

[0038] The beneficial effect is that the push rod and the sleeve body are sealed and cooperated to form a gas spring structure, so that the structure of the stabilizing device is simpler.

[0039] As a further improvement, the stop and limit portion of the movable frame is an ear plate extending toward the gripper shoe seat, and the ear plate has a stop surface for stop cooperation with the end surface of the gripper shoe seat.

[0040] The beneficial effect is that the ear plate structure makes the structure of the stop and limit part of the movable frame simpler.

[0041] As a further improvement, a plurality of lug plates are arranged along the circumference of the moving frame.

[0042] The beneficial effect is that the multiple ear plates can realize stable and reliable limiting cooperation between the shoe support seat and the movable frame.

[0043] As a further improvement, the steering drive device is a steering drive cylinder, one end of the steering drive cylinder is hinged to the moving frame, and the other end is hinged to the support shoe seat.

[0044] The beneficial effects are: the steering drive cylinder has a simpler structure and can output driving force stably and reliably, and the steering drive device adopts the steering drive cylinder so that the supporting device has a simpler structure and reliable working performance.

[0045] As a further improvement, the steering drive cylinder is a drive oil cylinder.

[0046] The beneficial effect is that the use of the oil cylinder can provide a larger and more reliable driving force.

[0047] As a further improvement, the shoe support seat and the mobile frame have an adjustment gap in the up-down direction, the steering drive device includes an up-down steering drive mechanism arranged on the left side and / or right side of the mobile frame, and the fixed part and the movable part of the up-down steering drive mechanism are arranged up-down and respectively connected to the shoe support seat and the mobile frame; and / or the shoe support seat and the mobile frame have an adjustment gap in the left-right direction, the steering drive device includes a left-right steering drive mechanism arranged on the upper side and / or lower side of the mobile frame, and the fixed part and the movable part of the left-right steering drive mechanism are arranged left-right and respectively connected to the shoe support seat and the mobile frame.

[0048] The beneficial effect is: the steering drive device for driving the mobile frame to move up and down is arranged on the left side and / or right side of the mobile frame, and the arrangement of the steering drive device will not occupy the space between the mobile frame and the shoe seat in the up and down direction, so that the size of the space between the mobile frame and the shoe seat only needs to meet the steering requirements, thereby making the shoe seat have the smallest possible structure and have a higher structural strength. Similarly, the steering drive device for driving the mobile frame to move left and right is arranged on the upper side and / or lower side of the mobile frame, so that the size of the space between the mobile frame and the shoe seat only needs to meet the steering requirements, thereby making the shoe seat have the smallest possible structure and have a higher structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a partial structural schematic diagram of the open TBM embodiment 1 of the present invention;

[0050] Figure 2 for Figure 1 Middle A-direction view;

[0051] Figure 3 It is a schematic diagram of the coordination structure of the main beam, the support device and the rear support in Example 1 of the open TBM of the present invention;

[0052] 1. Main beam; 2. Main drive; 3. Cutterhead; 4. Shield; 5. Support device; 6. Rear support; 7. Propelling cylinder; 8. Shoe support seat; 9. Shoe support; 10. Shoe support cylinder; 11. Tunnel wall; 12. Moving frame; 13. Annular steering interval; 14. Horizontal steering drive cylinder; 15. Up and down steering drive cylinder; 16. Ear plate; 17. Connecting plate; 18. Stabilizing device. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0055] It should be noted that relational terms such as "first" and "second" that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, elements defined by the sentence "including a...", etc., do not exclude the process or method that includes the elements.

[0056] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The present invention is further described in detail below in conjunction with embodiments.

[0059] Specific embodiment 1 of the open TBM provided by the present invention:

[0060] like Figure 1 As shown, it includes a main beam 1, a main drive 2, a cutter head 3 and a shield body 4, and the excavation direction is defined as the front. The front end of the main beam 1 is connected to the shield body 4, and a supporting device 5 and a rear support 6 located at the rear side of the supporting device 5 are arranged thereon. A propulsion cylinder 7 is arranged between the supporting device 5 and the shield body 4. The shield body 4 and the main beam 1 are relatively fixed, and the main drive 2 is used to drive the cutter head 3 to rotate.

[0061] like Figure 2 As shown, the supporting device 5 includes a support shoe device, which specifically includes a support shoe seat 8 and a support shoe 9. The support shoe seat 8 is a rectangular frame structure mounted on the main beam 1. Four groups of support shoe cylinders 10 are arranged at the four corners of the support shoe seat 8. One end of the support shoe cylinder 10 is connected to the support shoe seat 8, and the other end is connected to the corresponding support shoe 9. During the excavation process, the support shoe cylinder 10 is extended and tightened to the tunnel wall 11 through the support shoe 9, so as to fix the support shoe seat 8 relative to the tunnel wall 11.

[0062] The supporting device 5 also includes a moving frame 12, such as Figure 2 As shown, in this embodiment, the cross-section of the main beam 1 perpendicular to the front-to-back direction is a rectangular frame structure, and the cross-section of the movable frame 12 is also a rectangular frame structure, so that the movable frame 12 is mounted on the main beam 1 in a rotationally fixed manner. At the same time, a guide structure is provided between the inner circumference of the movable frame 12 and the outer circumference of the main beam 1, so that the movable frame 12 can cooperate with the main beam 1 in a guided and movable manner in the front-to-back direction.

[0063] Regarding the matching relationship between the shoe support 8 and the movable frame 12, Figure 2As shown, the shoe support seat 8 is sleeved on the outside of the mobile frame 12, and there is an annular steering gap 13 between the shoe support seat 8 and the mobile frame 12, so that the mobile frame 12 and the shoe support seat 8 have gaps in the up and down and left and right directions. Correspondingly, a steering drive device is arranged between the shoe support seat 8 and the mobile frame 12. In this embodiment, the steering drive device includes a horizontal steering drive cylinder 14 arranged on the lower side of the mobile frame 12 and an upper and lower steering drive cylinder 15 arranged on the left and right sides of the mobile frame 12. The horizontal steering drive cylinder 14 and the upper and lower steering drive cylinders are both connected to the shoe support seat 8 at one end and connected to the mobile frame 12 at the other end. In this embodiment, the upper and lower steering drive cylinders 15 and the horizontal steering drive cylinder 14 are both oil cylinders. Specifically, the cylinder barrel of the horizontal steering drive cylinder 14 is connected to the movable frame as a fixed part, and the piston rod is connected to the movable frame as a movable part. The cylinder barrel of the upper and lower steering drive cylinders 15 is connected to the shoe support seat as a fixed part, and the piston rod is connected to the mobile frame as a movable part. The fixed part and the movable part mentioned here refer to the two parts of the drive device that can move relative to each other. The horizontal steering drive cylinder is used as a horizontal steering drive mechanism to drive the movable frame to adjust its position relative to the shoe support in the left and right directions, and the up and down steering drive cylinder is used as an up and down steering drive mechanism to drive the movable frame to adjust its position relative to the shoe support in the up and down directions.

[0064] In addition, a stop and limit structure is provided between the shoe support 8 and the moving frame 12, and the stop and limit structure includes a shoe support stop and limit portion located on the shoe support 8 and a moving frame stop and limit portion located on the moving frame 12, and the shoe support stop and limit portion and the moving frame stop and limit portion are spaced apart in the front-to-back direction. Figure 2 and 3 As shown, the size of the moving frame 12 in the front-to-back direction is larger than the size of the shoe support seat 8 in the front-to-back direction, so that the front and rear ends of the moving frame 12 are extended relative to the front and rear ends of the shoe support seat 8, and the moving frame stopping and limiting parts are ear plates 16 arranged at the front and rear ends of the moving frame 12, part of the ear plates 16 are located on the upper end surface of the moving frame 12 and cantilevered upward, and part of the ear plates are located on the lower end surface of the moving frame 12 and cantilevered downward, and the ear plates 16 have a stopping surface that cooperates with the end surface of the shoe support seat 8, and the stopping and matching parts of the shoe support seat are the front and rear end surfaces of the shoe support seat 8.

[0065] In this embodiment, Figure 3As shown, left and right steering drive cylinders 14 are provided on the front and rear sides of the mobile frame 12. Each horizontal steering drive cylinder 14 is arranged horizontally with its axis extending left and right, one end of which is hinged to the shoe support seat 8 through a universal hinge, and the other end of which is hinged to a downwardly cantilevered ear plate 16 provided on the lower end surface of the mobile frame 12 through a universal hinge. Upper and lower steering drive cylinders 15 are provided on the front and rear sides of the mobile frame 12. Each upper and lower steering drive cylinder 15 is arranged with its axis extending up and down, the upper end of which is hinged to the end surface of the shoe support seat 8 through a universal hinge, and the lower end of which is hingedly connected to the mobile frame 12 through a universal hinge. Specifically, connecting plates 17 are provided on the left and right side surfaces of the end of the mobile frame 12, and the mobile frame 12 is hingedly connected to the lower end of the corresponding upper and lower rotation drive cylinders 15 through the connecting plates 17. In other embodiments, the ends of the horizontal steering drive cylinder and the upper and lower steering drive cylinders can also be connected to the support shoe seat and the movable frame in the form of a hinged shaft. To ensure that the steering action can be executed, the diameter of the hole at the hinge point is larger than the diameter of the hinge shaft so that appropriate deflection can occur between the two.

[0066] In order to maintain the distance between the ear plate 16 and the end surface of the shoe support seat 8, a stabilizing device 18 is further provided between the ear plate 16 and the end surface of the shoe support seat 8. The stabilizing device 18 elastically supports the ear plate 16 and the end surface of the shoe support seat 8 so that the distance between the ear plate 16 and the end surface of the shoe support seat 8 can be maintained. In this embodiment, the stabilizing device 18 is specifically a telescopic stabilizing device, including a sleeve body and a push rod inserted and matched in the sleeve body. The axis of the stabilizing device is extended forward and backward and arranged between the corresponding ear plate 16 and the end surface of the shoe support seat 8. There is an elastic power structure between the sleeve body and the push rod to drive the push rod to extend outward. In this embodiment, the elastic positioning structure includes a spring arranged between the push rod and the sleeve body. At the same time, the push rod is sealed and matched with the sleeve body to form a gas spring structure, so that the stabilizing device can apply a stable holding force between the ear plate and the end surface of the shoe support seat.

[0067] like Figure 1 and Figure 3As shown, the piston rod of the propulsion oil cylinder 7 is hinged on the shield body 4 as a movable part, and the cylinder body is hinged on the support shoe seat 8 as a fixed part. The fixed part and the movable part mentioned here are two parts of the propulsion device that can move relative to each other. During excavation, the shoe cylinder 10 is extended and tightened on the excavated tunnel wall 11 through the shoe 9, and the mobile frame 12 and the shoe seat 8 are kept relatively fixed in the up-down and left-right directions through the steering drive device, so that the main beam 1 is kept relatively fixed in the up-down and left-right directions relative to the shoe. That is, the shoe device tightened on the tunnel wall 11 provides a reaction force for the main beam 1, so that the main drive 2 can drive the cutter head 3 to rotate relative to the face, and the propulsion cylinder 7 is extended, and the shield body 4 is forced forward by the support device 5 as the force basis to achieve the crushing and excavation of the rock wall. During the advancement process, the shoe seat 8 maintains the position of the mobile frame 12 through the stopping and limiting structure and the stabilizing device, so as to prevent the mobile frame 12 from moving forward with the main beam 1, thereby maintaining the interval between the stopping and limiting part of the shoe seat and the stopping and limiting part of the mobile frame. When the tunnel boring machine needs to turn left or right, it can control the left and right steering drive cylinders 14 to extend or shorten. When the tunnel boring machine needs to turn upward or downward, it can control the upper and lower steering drive cylinders 15 to extend or shorten, and change direction while digging. After completing a stepping distance of digging, the rear support 6 is used to support the main beam 1, the support shoe cylinder 10 is retracted to release the support device for the tunnel wall 11, the propulsion cylinder 7 is retracted, and the support device 5 is stepped along the main beam 1. After the stepping is completed, the support shoe cylinder 10 is extended to achieve the support coordination between the support device 5 and the tunnel wall 11, and the rear support 6 is retracted to continue digging. As for the connection position of the movable end of the propulsion cylinder, in other embodiments, it can also be connected to the main beam or the main drive or other structures fixed relative to the main beam and the shield.

[0068] The specific embodiment 2 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, a stabilizing device is provided between the stop and limit portion of the gripper seat and the stop and limit portion of the moving frame. In this embodiment, in order to simplify the structure of the supporting device, a stabilizing device is no longer provided between the stop and limit portion of the gripper seat and the stop and limit portion of the moving frame.

[0069] The specific embodiment 3 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the stop and limit part of the shoe seat in the stop and limit structure is the end face of the shoe seat, and the stop and limit part of the moving frame is the ear plate. In this embodiment, the stop and limit part of the shoe seat is a shoe seat baffle plate arranged on the inner wall surface of the shoe seat, and the stop and limit part of the moving frame is two limit plates arranged on the outer peripheral surface of the moving frame, the two limit plates are arranged at intervals in the front-to-back direction, and the shoe seat baffle plate is arranged between the two limit plates.

[0070] The specific embodiment 4 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the shoe support and the mobile frame are both circumferentially closed rectangular frame structures. In this embodiment, the shoe support and the mobile frame are non-closed structures in the circumferential direction, for example, the mobile frame is a U-shaped structure mounted on the main beam, and is slidingly guided with the three sides of the main beam, and the guide matching structure is an anti-slip matching structure, so that the mobile frame is anti-slip mounted on the main beam, for example, a T-shaped slide groove is provided on the side wall of the main beam, and a T-shaped slider matching with the T-shaped slide groove is provided on the side wall of the mobile frame. Similarly, the shoe support can also be U-shaped and mounted on the mobile frame.

[0071] The specific embodiment 5 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, four groups of gripper cylinders are arranged on the gripper seat and four grippers are arranged correspondingly. In the present embodiment, three groups of gripper cylinders are arranged on the gripper seat and three grippers are arranged correspondingly. Of course, in other embodiments, more than four groups of gripper cylinders can be arranged on the gripper seat, and the number of grippers corresponds to the cylinders of the gripper cylinder group.

[0072] The specific embodiment 6 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the stabilizing device is a telescopic stabilizing device arranged between the stop limit part of the gripper seat and the stop limit part of the moving frame. In this embodiment, the stabilizing device is a rubber block arranged between the stop limit part of the gripper seat and the stop limit part of the moving frame, that is, the driving device is an elastically deformable driving device. Of course, in other embodiments, the stabilizing device can also be a compression spring arranged between the stop limit part of the gripper seat and the stop limit part of the moving frame.

[0073] The specific embodiment 7 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the upper and lower steering drive cylinders and the horizontal steering drive cylinders are oil cylinders. In this embodiment, the upper and lower steering drive cylinders and the horizontal steering drive cylinders are air cylinders.

[0074] The specific embodiment 8 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the steering drive device is a driving cylinder. In this embodiment, the steering drive device is a nut-screw mechanism, the nut of the nut-screw mechanism is arranged on one of the gripper seat and the moving frame as a movable part, and the screw is arranged on the other of the moving frame and the gripper seat as a fixed part.

[0075] The specific embodiment 9 of the open TBM provided by the present invention is mainly different from the embodiment 1 in that: in the embodiment 1, the shoe support and the movable frame have intervals in both the up-down and left-right directions, so that the TBM can turn in both the left-right direction and the up-down direction during the excavation process. In this embodiment, on the premise that the tunnel to be excavated only turns in the left-right direction, the shoe support and the movable frame have intervals only in the left-right direction, and correspondingly, the steering drive device is a left-right steering drive mechanism. Of course, in other embodiments, on the premise that the tunnel to be excavated only turns in the up-down direction, the shoe support and the movable frame have intervals only in the up-down direction, and correspondingly, the steering drive device is an up-down steering drive mechanism.

[0076] The specific embodiment 10 of the open TBM provided by the present invention is different from the embodiment 1 mainly in that: in the embodiment 1, the propulsion device is a propulsion cylinder. In this embodiment, the propulsion device is a nut-screw mechanism, the nut of the nut-screw mechanism is connected to one of the shield body and the shoe seat as a movable part, and the screw is arranged on the other of the shield body and the shoe seat as a fixed part.

[0077] Specific embodiments of the tunnel boring machine support device provided by the present invention:

[0078] The structure of the tunnel boring machine support device is the same as the structure and working principle of the support device in the above-mentioned open TBM embodiments 1-10, and will not be repeated here.

[0079] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support device for a roadheader, comprising a gripper device, wherein the gripper device comprises a gripper seat, gripper oil cylinders are arranged at intervals along the circumference of the gripper seat, one end of the gripper oil cylinder is connected to the gripper seat, and the other end is connected to the gripper, wherein the gripper device comprises a gripper seat, wherein the gripper oil cylinders are connected to the gripper seat, and the other end is connected to the gripper, wherein the gripper device comprises a gripper seat, wherein The shoe support is provided with a movable frame, which is used to be mounted on the main beam of the tunnel boring machine and has a structure that cooperates with the main beam of the tunnel boring machine for guiding and stopping, so that the movable frame can be guided and moved along the front and rear directions and cooperated with the main beam of the tunnel boring machine for circumferential rotation. A stopping and limiting structure for limiting in the front and rear directions is provided between the shoe support and the movable frame, and the stopping and limiting structure includes a shoe support stop and limit part located on the shoe support and a movable frame stop and limit part located on the movable frame. An annular steering gap, a shoe support stop and limit part and a movable frame stop and limit part are provided between the shoe support and the movable frame. There is an adjustment gap in the front and rear directions, and a steering drive device is arranged between the shoe seat and the moving frame for driving the moving frame to adjust its position relative to the shoe seat when the shoe holds the tunnel wall tightly to drive the tunnel boring machine to turn. The steering drive device includes an upper and lower steering drive mechanism arranged on the left and right sides of the moving frame and a left and right steering drive mechanism arranged on the upper and lower sides of the moving frame. The fixed part and the movable part of the upper and lower steering drive mechanism are arranged up and down and are respectively connected to the shoe seat and the moving frame, and the fixed part and the movable part of the left and right steering drive mechanism are arranged left and right and are respectively connected to the shoe seat and the moving frame.

2. The tunnel boring machine support device according to claim 1, characterized in that: A stabilizing device capable of elastic deformation or elastic expansion and contraction to be pressed tightly between the stop and limit part of the shoe support seat and the stop and limit part of the movable frame is provided between the two.

3. The tunnel boring machine support device according to claim 2, characterized in that: The stabilizing device is a telescopic stabilizing device, comprising a sleeve body and a push rod inserted and matched in the sleeve body, and an elastic power structure for driving the push rod to extend outward is provided between the sleeve body and the push rod.

4. The tunnel boring machine support device according to claim 3, characterized in that: The elastic power structure comprises a spring, and the spring can drive the push rod to extend outward.

5. The tunnel boring machine support device according to claim 3, characterized in that: The push rod and the sleeve body are sealed and matched to form a gas spring structure.

6. The tunnel boring machine support device according to any one of claims 1 to 5, characterized in that: The stopping and limiting part of the movable frame is an ear plate extending toward the gripper shoe seat, and the ear plate has a stopping surface for stopping and cooperating with the end surface of the gripper shoe seat.

7. The tunnel boring machine support device according to claim 6, characterized in that: A plurality of lug plates are arranged along the circumference of the moving frame.

8. The tunnel boring machine support device according to any one of claims 1 to 5, characterized in that: The steering drive device is a steering drive cylinder, one end of which is hinged on the moving frame, and the other end of which is hinged on the support shoe seat.

9. The tunnel boring machine support device according to claim 8, characterized in that: The steering drive cylinder is a drive oil cylinder.

10. An open TBM, comprising a cutterhead and a main drive for driving the cutterhead to rotate, the open TBM also comprising a main beam and a support device and a rear support arranged on the main beam, the open TBM also comprising a propulsion device, wherein one of the fixed part and the movable part of the propulsion device is connected to the support device, and the other is connected to the main beam or a structure fixed relative to the main beam, so as to drive the cutterhead, the main drive and the main beam to move forward based on the support device, and the rear support is used to support the main beam when the support device steps, wherein the feature is that: The supporting device is a tunnel boring machine supporting device as described in any one of claims 1-9.

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